January Jones was practically unrecognizable on Monday, November 19, as she stepped out in Los Angeles as a brunette! With son Xander in tow, the Mad Men star showed off her new locks with a blue sweater and dark jeans. Jones is no stranger to changing her hair color, as she has been a blonde, redhead, then back to blonde again! View the slideshow above to see more of Jones's new look and what she chose to pair with her brunette 'do, and all of her hairstyles past.